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- 2011
- Article
Scalable Detection of Anomalous Patterns With Connectivity Constraints
By: Skyler Speakman, Edward McFowland III and Daniel B. Neill
We present GraphScan, a novel method for detecting arbitrarily shaped connected clusters in graph or network data. Given a graph structure, data observed at each node, and a score function defining the anomalousness of a set of nodes, GraphScan can efficiently and... View Details
- 2015
- Article
Scalable Detection of Anomalous Patterns With Connectivity Constraints
By: Skyler Speakman, Edward McFowland III and Daniel B. Neill
We present GraphScan, a novel method for detecting arbitrarily shaped connected clusters in graph or network data. Given a graph structure, data observed at each node, and a score function defining the anomalousness of a set of nodes, GraphScan can efficiently and... View Details
Speakman, Skyler, Edward McFowland III, and Daniel B. Neill. "Scalable Detection of Anomalous Patterns With Connectivity Constraints." Journal of Computational and Graphical Statistics 24, no. 4 (2015): 1014–1033.
- Article
Fast Subset Scan for Multivariate Spatial Biosurveillance
By: Daniel B. Neill, Edward McFowland III and Huanian Zheng
We present new subset scan methods for multivariate event detection in massive space-time datasets. We extend the recently proposed 'fast subset scan' framework from univariate to multivariate data, enabling computationally efficient detection of irregular space-time... View Details
Neill, Daniel B., Edward McFowland III, and Huanian Zheng. "Fast Subset Scan for Multivariate Spatial Biosurveillance." Statistics in Medicine 32, no. 13 (June 15, 2013): 2185–2208.
- November–December 2015
- Article
Active Postmarketing Drug Surveillance for Multiple Adverse Events
By: Joel Goh, Margrét V. Bjarnadóttir, Mohsen Bayati and Stefanos A. Zenios
Postmarketing drug surveillance is the process of monitoring the adverse events of pharmaceutical or medical devices after they are approved by the appropriate regulatory authorities. Historically, such surveillance was based on voluntary reports by medical... View Details
Keywords: Drug Surveillance; Health Care; Stochastic Models; Queueing; Diffusion Approximation; Brownian Motion; Health Care and Treatment; Analytics and Data Science; Analysis
Goh, Joel, Margrét V. Bjarnadóttir, Mohsen Bayati, and Stefanos A. Zenios. "Active Postmarketing Drug Surveillance for Multiple Adverse Events." Operations Research 63, no. 6 (November–December 2015): 1528–1546. (Finalist, 2012 INFORMS Health Applications Society Pierskalla Award.)
- 2016
- Article
Penalized Fast Subset Scanning
By: Skyler Speakman, Sriram Somanchi, Edward McFowland III and Daniel B. Neill
We present the penalized fast subset scan (PFSS), a new and general framework for scalable and accurate pattern detection. PFSS enables exact and efficient identification of the most anomalous subsets of the data, as measured by a likelihood ratio scan statistic.... View Details
Keywords: Disease Surveillance; Likelihood Ratio Statistic; Pattern Detection; Scan Statistic; Mathematical Methods
Speakman, Skyler, Sriram Somanchi, Edward McFowland III, and Daniel B. Neill. "Penalized Fast Subset Scanning." Journal of Computational and Graphical Statistics 25, no. 2 (2016): 382–404. (Selected for “Best of JCGS” invited session by the journal’s editor in chief.)
- September 1986 (Revised February 1991)
- Case
Graves Industries, Inc. (C): Consumer Hardware Division
Describes events occurring over a three-year period in a division of Graves Industries. The division is being squeezed for profit, and managers in the division get involved in some fraudulent financial reporting schemes involving revenues and capitalization of... View Details
Merchant, Kenneth A. "Graves Industries, Inc. (C): Consumer Hardware Division." Harvard Business School Case 187-047, September 1986. (Revised February 1991.)
- September 1986 (Revised March 1987)
- Case
Graves Industries, Inc. (B): Lohnes Marine Hardware Division
Describes events occurring over a four-year period in one division of Graves Industries. The division goes through a business cycle and uses several methods of managing earnings to meet its budget targets. The purpose of the case is to allow the exploration of the... View Details
Merchant, Kenneth A. "Graves Industries, Inc. (B): Lohnes Marine Hardware Division." Harvard Business School Case 187-046, September 1986. (Revised March 1987.)
- 2022
- Working Paper
Post-market Surveillance of Software Medical Devices: Evidence from Regulatory Data
By: Alexander O. Everhart and Ariel D. Stern
Medical devices increasingly include software components, which facilitate remote patient monitoring. The introduction of software into previously analog medical devices as well as innovation in software-driven devices may introduce new safety concerns—all the more so... View Details
Keywords: Technological Innovation; Safety; Governing Rules, Regulations, and Reforms; Health Care and Treatment; Medical Devices and Supplies Industry
Everhart, Alexander O., and Ariel D. Stern. "Post-market Surveillance of Software Medical Devices: Evidence from Regulatory Data." Harvard Business School Working Paper, No. 23-035, November 2022.
- May 2022
- Article
Coins for Bombs: The Predictive Ability of On-Chain Transfers for Terrorist Attacks
By: Dan Amiram, Evgeny Lyandres and Daniel Rabetti
This study examines whether we can learn from the behavior of blockchain-based transfers to predict the financing of terrorist attacks. We exploit blockchain transaction transparency to map millions of transfers for hundreds of large on-chain service providers. The... View Details
Keywords: Blockchain; Bitcoin; Accounting; AI and Machine Learning; National Security; Governing Rules, Regulations, and Reforms
Amiram, Dan, Evgeny Lyandres, and Daniel Rabetti. "Coins for Bombs: The Predictive Ability of On-Chain Transfers for Terrorist Attacks." Journal of Accounting Research 60, no. 2 (May 2022): 427–466.
- 27 Jan 2020
- Research & Ideas
Hard Work Isn't Enough: How to Find Your Edge
Evidently the professor detected none of her sarcasm and gave her a B-minus. Huang avoided the mistake many people make: counting themselves out of the running based on the constraints other people place on them—or ones they place on... View Details
Keywords: by Dina Gerdeman
- 24 Feb 2009
- First Look
First Look: February 24, 2009
complete, and advertisers can extend this delay both to improve detection of improper partner practices and to punish partners who turn out to be rule-breakers. I capture these relationships in a screening model with delayed payments and... View Details
Keywords: Martha Lagace
- 05 Nov 2014
- What Do You Think?
Are We Entering an Era of Neuromanagement?
by high levels of ambition and values or leadership behaviors at companies." Johnny added, "Neuromanagement will be based on electronic testing however it will not detect 'will-power.' It is our will that determines how... View Details
Keywords: by James Heskett
- 25 Jul 2006
- First Look
First Look: July 25, 2006
and other government entities to detect and deter such attacks. Explores why complex organizations with multiple missions develop seams and become vulnerable to threats that cut across those seams. Fuels a discussion of whether and how... View Details
Keywords: Sean Silverthorne
- 08 May 2018
- First Look
First Look at New Research and Ideas, May 8, 2018
manner that increases reimbursement or avoids financial penalties. Identifying upcoding in claims data is challenging due to unobservable confounders (e.g., patient risk). We leverage state-level variations in adverse event reporting... View Details
Keywords: Sean Silverthorne
- 15 Jul 2002
- Research & Ideas
Going Green Makes Good Business Sense
living longer—but eventually dying of diseases that could plausibly have an environmental component. Just as there has been progress in scientifically detecting foreign contaminants in the air and water, the public clamors for protection... View Details
Keywords: by Martha Lagace
- 04 May 2010
- First Look
First Look: May 4
most rigorous extant methodologies for detecting "tunneling," or efforts by firms' controlling owner managers to take money for themselves at the expense of minority shareholders. We find that, in contrast to prior views, Indian... View Details
Keywords: Martha Lagace
- 05 Dec 2012
- What Do You Think?
Should Managers Bother Listening to Predictions?
predictors. Taleb, in The Black Swan, worried that cataclysmic events (Sandy) are next to impossible to predict and too costly to prepare for, given the small probability that they will ever occur. Human beings by and large do not have... View Details
Keywords: by James Heskett
- 31 Jan 2012
- First Look
First Look: Jan. 31
avoidable ways. This article is based on the analysis of hundreds of work diaries from professionals describing everyday events that involved high-level managers in their companies. The analysis uncovered four major types of actions that... View Details
Keywords: Sean Silverthorne & Carmen Nobel
- 21 Dec 2010
- First Look
First Look: December 21
puzzling. We conducted an ethnographic investigation to examine the nature of events that compelled managers to engage in redundant communication. Our study of the communication patterns of project managers in six companies across three... View Details
- 19 Oct 2015
- Research & Ideas
Business Research that Makes for Smarter Public Policy
Safety and Health Administration (OSHA), to participate in a workshop with academics who study government regulation and industry compliance. The event featured a series of presentations by scholars sharing their research findings and... View Details
Keywords: by Michael Blanding